Power-operated window-cleaning device



H. C. RGERTSQN POWER O ERATED WINDOW CLEANING DEVICE Filed Now 1.4 192i Vmn/ENYOR 'df/afg 6. Re: avisan ATTORNEY To @ZZ whom new; wel.:

Be it known f, ein' (I, oeicn'i'song e citizen or-he Uniefi firmes? residing ai Seattle, in the eouniny mi' and Siete of Washington, have inrencri vermin. new emi useful mproremens in 'ibowei@perenni wWindowCleaning ifleiees`r of which he iwi lowing is e speciiiceiion.

This inven'ieii relates io power operzi'e ei/'ieee for removing eeennniieions ei" rain,

snow7 or the iie from the winiion's or windshiekis of euoinobiiis or nher vehicles,

The-object of `he presen? invention is ehe perfecting of window slimming'- devices o this character.

The inveniie in iis preferred emboiiiment is iilusizre ed in Ahe accompanying drevyings, in which: i

Figure l is e, from eieveiou of he upper portion 0 e, Windshield wih my windowcleaning device eppiied iiere'm ig. t2 is e, View, pertiy in eiereion :imi partly in longitudinal section oi' ne device to en eularged seele. Fig-s. 3, e, anni 5 are deinii 5 sectional Views miren substantially through 3--3, 4 4 and 5--5 ef n seid drawings the reference nuuicrzii (i represents a windshield glass rigidiy secured ain a, frame 7. According to my invention I provide in freni, of the windshieid n squeegee 8 which is pivoiaily conne-eten ai.. i) to the ionfer enci of e, iini whose ripper end is connesse@ by n pivot 'il izo erm 15E of a nui This int ie inounieci io @aerei :i5 on a horizonini screw ifi provifiefi in e casing inriieeted, genereiiy, by 15 anni rigioiiy secured io `the windshieiei in any suitable manner es, for exampie, by means of hook eieznenis 16 extending over bhe Windshield freine enci demping screws i? as shown. in Fig/,2 fi Saifi casing is'eomposed, ,ferehigg of :i tubuiermember i8 which e ends ie/erafiiy from e member l@ which serves es e, beliebig for the mechanism by whioh the screw shaft 14 is driven to bropei seid' nuit.. Said shai; extends through both of the casing members.

The tubular easing member i8 is providedwith e. longitudinai siot 20, Fig. 4, through which the nui; erm i2 extends. 2i represens a sprin secured to the erin l2 and serving to yiel ingiy press the squecjee 8 against. the front surface of bhe Winshiei friese. The pzmb M1 of Wihin abe casing member 19 is ciesirzibiy square in rensverse section and extends threugh, a ceri-esponc aperture in ihfy huh of u f 'zei which is shiviizxhie :ixiniiy ne shaft hroegh he insii'ummiteliiy of ihe nu?, 'i3 when the iziiiei' is in proximity of he ends oi' iis Lei/*ei on said simi. The ,rr-"ism sho for ziccoinpiishing; such siiiii' D morena iis oi seid Wheei comprises an enniiier coiiar :f3/ engaging in zi peripherai grew/e iu she wh-eci huh and rigidly eonneeefi by 225 'ith yoiies 2G :uid QT, one ceci; sii'ie of She uul, and adjacent to Ehe enos kof the hreefieii jooriion of the Sheff. 'if Y yh the yokes are coiiers 261 EYE and heiiezii springs 28 inerposed between the vokes sind the edjecent (zeilers,

rThe shaft part 141 pioviiefi 'with spaced notches 29 for engagement with latch de Vices carried by the Wheel 23 for releasabiy securing he seme in preeietermined 'posis.I fis ees shown in 5, seidrieich deif'iees consisiy of :i sind 3() exending ehrough e bore in hub 22 ami is aced uponl by e spring Si to yieifiingiy'retain e bali 32 in engaged reintiens with one or he other of seid notches when thewheei is suibably shiftefi by he nut encountering' the coiiars 261 or 2171 io zrensmit mo'ion through the essoeiececi spring 28 and yoke 2G or 27 and rods 25 bo the wheel coiiar Q4.- For drin-ing she screw Sheik io impart inebion t-hroug'h ibhe medium oi the nui 'o the squeegee if empoy ein eieeiric'mobor 33 having on its Shaft e riebion pinion Se;3 Fig. S, and e, spur i 35 which ini/ier is in continuous mesh vifh e, spur gear 36 on an intermediate shaft 3'?. This inerinedieie shaft also has mounted. hereon e fieiion pinion 38. The fric- 'ion piniene end 38 are (iieposefi at oppoezie sides of the friction wheei 23 und ereng'erl ibo be engegeci thereby when the Wiieei shiefi :is explained above. The Wheel' pinions therefor desirabiy proificie with conoidal peripherai surfaces and he pinions splined io the respective shes and reshecively held in engngeibie posiions as by; 'means of springs in operation, ihe motor shaft 331 avis hrough spur gears 35 and 36 to drive the inicrineciiaie shaft 37 inr an opposiie direction from the motor shaft thereby causing the friction pinions f 4 and 38 to be driven in opposie rotary directions. Assuming the friction Wheei 23 to be in engaged relations with the pinion 3&3 io Cause the screw shaft "iii o eSe-e'n the revei of the nui; 13 and the Q msi/,eos

squeegee toward the left hand side of Fig. 2. `When the nut. encounters Collar 261 the adjacent spring 28 is compressed against. yoke 2Q until it, accumulates power sntlicient t0 displace latch hall 32 from the notch 2t) wherein ity is engaged and transposes it to the. other notch h v aviall)- shifting thev wheel 23. lVhen this occurs the wheel i223 is removed from its frictional engagementwith the pinion 38 into engagement, with the. other pinion 34 whereby the rotation of the screw shaft is reversed whereupon the init and squeegee are propelled toward the right, until arrested h v the shitting of the friction wheel which is effected hv the. nut 13 actuating the .volte 2'?.

From the above description it will he noted that the reciproeatio-n ot' the sqneegree in the present invention is obtained hy means oit' reversing mechanism. from a motor shaft which is driven in a single rotar)v direction.

`What I claim isf*4 1. In a window cleaning device. a hori` zontally disposed screw shaft.. av nut thereon. adapted to carrjvr a. cleaning element, a motor, a shaft intermediate the motor shaft and the screw shaft. tgear connections between the motor shaft and thev intermediate shaft for rotating the, latter in opposite direction from the motor shaft. pinions provided on the. motor and intermediate shafts. a. gear wheel mounted on said sereiv shaft, means aetiiated liijv the, travel of said mit whereby said gear wheel is engaged alternately with said pinions whereby the. rotation of the. screw shaft is reversed to eleet they reoiproeatimi of said mit.

2. In a window cleaning device. a horizontally disposed screw shaft., a nut taking thereon adapted to carry a cleaning element, a. friction wheel mounted on said Shaft to rotate therewith and arranged for axial movements relative there-to, a power shaft,

ay friction pinion mounted on said vpower Shaft. a Shaft intermediate. the power sha it and the screw shaft. a friction pinion mounted on said intermediate shaft, operative con-- neetions between said power shaft and the intermediate shaft for rotatingr the latter in ay direction opposite to that ot the motor shaft. and means rendered operable h v the. nutwhen near the ends of its travel on said screw shaft whereby the friction wheel is shifted into engaged relations with said pinions alternately to effect reversed rotarv inm'ements of the screw shaft where-hv said nut is reeiprocated.

3. ln a window cleaningr device. a horizontallg1 disposed screw shaft. a nnttaking thereon adapted to cariv a cleaning element. a friction wh'eel mounted on said shaft to rotate therewith and arranged for axial movements relative thereto. a power shaft, a pinion mounted on said power shaft. a shaftI intermediate the power shaft and the. screw shaft, a pinion mounted on said intermediate shaft., operative connections between said power shaft. and the intermediate shaft for rotating the latter in a direction opposite. to that of the power shaft.. `vokes provided at, opposite sides of said nut. rods rigidly connected to said vokesr` operative connections between said rods and said wheel. resilient means engageahle h v said nut wherebythe voles are. influenced to shit'tr the wheel into engagement with each of said pinions alternatelv for driving the screw shaft to atlord reciproeatory movements to the nut.

Signed at. Seattle. YVashington. (his 3rd day of November t921.

Witnesses z Planas BARNES. lilaasAnn'r G. SUrrLn. 

